2 34 Lecanhnce. 



edition he adds the following note : ' I may add that now (1872) there is not 

 nearly as much said about the bug as fifteen or twenty years ago, and although 

 we shall probably never get free from it, it is to be hoped we shall gradually 

 hear less and less of it. Meanwhile, I have had letters from Honolulu com- 

 plaining of the same bug on coffee trees there.' Nietner's prediction came 

 true, and for some years before coffee failed, the bug — as a pest — had practi- 

 cally disappeared. Since the cultivation of the tea plant has become general, 

 Lee. kemispharicum occasionally asserts itself on individual bushes, but I have 

 never heard of its extending over any considerable area. As existing at present, 

 it may be easily controlled by spraying with Strawson's mixture or MacDougall's 

 Insecticide wash. (See Part II. p. xxxix.) 



Many minute hymenopterous parasites prey upon the insect, and probably 

 tend to keep it in check. Nietner mentions the following species bred from 

 the 'Brown Bug': Scutcllista cyanea, Encyrtus nietneri, E. paradisicus, 

 Cephaleia purpureiventris, C. brunneiventris, C. fusciveniris, Cirrhospilus 

 coccivorus, and MaHetta leopardina. Dr. L. O. Howard, of the United States 

 Department of Agriculture, has determined the following species bred by me 

 from this same bug : Corny s rufescens (Motschulsky), Coccophagus orientalis 

 (Howard), and C.flavescens (Howard). 



Prof. Cockerell refers this species, and the section to which it belongs, 

 together with L. olece and its allies, to the genus Saisseiia, Deplanches. (See 

 Enimn. Student, May 15th, 1901.) 



EXPLANATION OF PLATE LXXXV. 

 Lecanium hemisph^ricum. 



Fig. I. Insects on tea stem, nat. size. 



2. Young larva. 



3. Larva, further advanced. 



4. Early female, dorsal view. 



5. „ „ side view. 



6. Adult female, side view, x 12. 



7. „ „ before oviposition, dorsal view, x 12. 

 S. „ „ „ „ ventral view, x 12. 

 9. „ „ after oviposition, ventral view, x 12. 



10. Male puparium. 



1 1. Adult male. 



1 2. Portion of derm of adult female, showing stigmatic spines, 



marginal hairs, and dermal cells, x 1 50. 



13. Marginal hairs, x 650. 



14. Anal operculum, x 150. 



15. Antenna, x 150. 



16. Leg, x 150. 



